Team Losi MultiPro User manual

INTRODUCTION
INTRODUCTION
Specifications
01
Thank you for purchasing the MultiPro™ Intelligent Balance Charger by Losi.This product is a
rapid charger with a high performance microprocessor and specialized operating software. Please
read this operating manual completely before using this product.
Operating voltage range:
Circuit power:
Charge current range:
Discharge current range:
Current drain for balancing LiPo:
NiCd/NiMH battery cell count:
Li-ion/LiPo cell count:
Pb battery voltage:
Weight:
Dimensions:
DC 11.0 - 18.0 V
AC to DC adapter (DC 11.0 - 18.0 V/5 A)
Max. charge power 50 W
Max. discharge power 5 W
0.1-5.0 A
0.1-1.0 A
300 mAh/cell
1-15 cells
1-6 series
2 - 20 V
227 g (net weight)
133 x 87 x 33 mm)

SPECIAL FEATURES
SPECIAL FEATURES
Optimized operating software
Internal independent lithium battery balancer
Balancing individual cells while battery is discharging
Adaptable to various types of lithium batteries
Fast and storage mode
02
The MultiPro™ charger features an automatic charging function that sets the operating current during the
process of charging or discharging.This can prevent overcharging of lithium batteries which could lead to a
battery fire or explosion. It will disconnect the circuit automatically and alarm the user once a malfunction is
detected. All programs on this charger are controlled through two-way communication, achieving maximum
safety and ease-of-use. All settings are user configurable.
This charger employs an individual-cell voltage balancer. It isn’t necessary to connect an external balancer for
balance charging.
During the process of discharging, this charger can monitor and balance each cell of the battery individually. If the
charger detects that the voltage of any single cell is abnormal, an error message will be displayed and the process
will be ended automatically.
The ‘fast’ mode is used to reduce the charge duration, whereas the ‘storage’ mode can control the final voltage of
the battery. This will allow long-term storage of the battery and protect the useful life of the battery.
This charger can charge various types of lithium batteries including Li-ion, LiPo, and the new LiFe batteries.

Maximum safety
SPECIAL FEATURES
Automatic charging current limit
Capacity limit
Temperature threshold*
Processing time limit
Input power monitoring
Data store/load
03
Delta-peak sensitivity: The automatic charge termination is based on the principle of delta-peak voltage
detection.When the battery’s voltage exceeds the threshold, the process will be terminated automatically.
You can set the upper limit of the charging current when charging NiCd and NiMH batteries.This is useful for
NiMH batteries of low impedance and capacity when using the ‘AUTO’ charging mode.
The charging capacity is calculated as the charging current multiplied by time. If the charging capacity exceeds
the limit, the process will be terminated automatically when it reaches the maximum value you have set.
To protect your car’s battery from being over discharged when used as the DC power input, the voltage is
continuously monitored. If the voltage drops below the lower limit, the process will be ended automatically.
Data for a maximum of five batteries can be stored for your convenience.You can store data pertaining to
program settings of the battery for continuous charging or discharging.Users can recall this data at any time
without any special program setting.
The battery’s internal chemical reaction will cause the temperatue of the battery to rise. If the temperature limit
is reached, the process will be terminated automatically.*
* This function is available by connecting the optional temperature probe, not included.
You can also limit the maximum process time to avoid overcharging your battery.

Cyclic charging/discharging
SPECIAL FEATURES
04
One to five cycles and continuous process of charge<>discharge to help balance and stimulate the battery’s
activity.

WARNING:
WARNING:
LITHIUM POLYMER BALANCE CHARGE PROGRAM
CONNECTION DIAGRAM
LITHIUM POLYMER BALANCE CHARGE PROGRAM
CONNECTION DIAGRAM
06
This diagram shows the correct way to connect your battery to the MultiPro™ charger while charging in the
balance charge program mode.
Failure to connect as shown in this diagram will damage the charger.
The main battery leads must be connected along with the balance lead connectors as shown before charging
your battery. Pay close attention to the polarity of the main battery leads.
If using crocodile clips be sure they are unable to touch together!

WARNING AND SAFETY NOTES
WARNING AND SAFETY NOTES
07
These warnings and safety notes are particularly important. Please follow the instructions for maximum
safety; otherwise the charger and the battery can be damaged or, at worst, it can cause a fire.
Never leave the charger unattended when it is connected to its power supply. If any malfunction is found,
TERMINATE THE PROCESS AT ONCE and refer to the operation manual.
This charger and the battery should both be placed on a heat-resistant, non-flammable and non-
conductive surface. Never place them on a car seat, carpet, or similar surface.Keep all flammable and
volatile materials away from the operating area.
Make sure you know the specifications of the battery to be charged or discharged to ensure it meets the
requirements of this charger. If the program is set up incorretly, the battery and charger may be damaged.
Improper settings can cause the battery to become overcharged potentially leading to fire or explosion.
This warranty is not valid for any damage or subsequent damage arising as a result of misuse or failure to
observe the procedures outlined in this manual.
Keep the charger well away from dust, dampness, rain, heat, direct sunshine, and vibration. Never drop it.
The allowable input voltage is 11-18V DC

NiCd/NiMH
Voltage level: 1.2V/cell
Allowable fast charge current: 1-2C (depending upon the performance of the cell)
Discharge voltage cutoff level: 0.85V/cell (NiCd), 1.0V/cell (NiMH)
Li-ion
Voltage level: 3.6V/cell
Max. charge voltage: 4.1V/cell
Allowable fast charge current: 1C or less
Discharge voltage cutoff level: 2.5V/cell or higher
LiPo
Voltage level: 3.7V/cell
Max. charge voltage: 4.2V/cell
Allowable fast charge current: 1C or less
Discharge voltage cutoff level: 3.0V/cell or higher
LiFe
Voltage level: 3.3V/cell
Max. charge voltage: 3.6V/cell
Allowable fast charge current: 4C or less
Discharge voltage cutoff level: 2.0 V/cell or higher
Pb
Voltage level: 2.0V/cell
Max. charge voltage (lead-acid): 2.46V/cell
Allowable fast charge current: 0.4C or less
Discharge voltage cutoff level: 1.75V/cell or higher
WARNING AND SAFETY NOTES
08

WARNING AND SAFETY NOTES
09
To avoid short circuit between the charge leads, always connect the charge cable to the charger first, then
connect the battery. Reverse the sequence when disconnecting.
Do not connect more than one battery pack to this charger at any time.
Never attempt to charge or discharge the following types of batteries:
A battery pack which consists of different types of cells (including different manufacturers).
A battery that is already fully charged or just slightly discharged.
Nonrechargeable batteries (explosion hazard).
Batteries that require a different charge technique from NiCd, NiMH, LiPo, or Gel cell (Pb, lead
acid).
A faulty or damaged battery.
A battery fitted with an integral charge circuit or a protection circuit.
Batteries installed in a device or which are electrically linked to other components.
Batteries that are not expressly stated by the manufacturer as suitable for the current the
charger delivers during the charging process.

WARNING AND SAFETY NOTES
Did you select the appropriate program suitable for the type of battery that you are
charging?
Did you set up adequate current for charging or discharging?
Have you checked the battery voltage? Lithium battery packs can be wired in parallel
and in series, e.g. a 2-cell pack can be 3.7V (in parallel) or 7.4V (in series).
Have you checked that all connections are firm and secure? Make sure there are no
intermittent contacts at any point in the circuit.
Charging
10
Please keep in mind the following points before charging:
While charging, a specific quantity of electrical energy is fed into the battery. The charge
quantity is calculated by multiplying charge current by charge time. The maximum permissible
charge current varies depending on the battery type and its performance. Check the
manufacturer’s specifications for the battery you are using. Only batteries that are expressly
stated to be capable of quick-charge should be charged at rates higher than the standard charge
current.
Connect the battery to the terminal of the charger (red is positive and black is negative). Use
conductors with adequate cross-section and high-quality connectors, normally gold-plated, to
meet the charging and discharging current demands.

WARNING AND SAFETY NOTES
Discharging
11
Always refer to the battery manufacturer’s recommendations for charging current and duration.This is
especially important for lithium batteries.
Make sure that the polarity is correct when connecting your battery to the charger.This is particularly
important for lithium batteries.
Do not attempt to disassemble batteries.
The main purpose of discharging is to condition the capacities of the cells and to reduce the battery’s
voltage to a defined level for storage.The same attention should be paid to the discharging process as
charging.The final discharge voltage should be set up correctly to avoid over-discharging the battery.
Lithium batteries cannot be discharged to lower than the minimum voltage without rapidly reducing
capacity and risking catastrophic failure.Generally, lithium batteries do not need to be discharged.
Please pay close attention to the minimum voltage of lithium batteries specified by the battery’s
manufacturer to protect the battery.
Some rechargeable batteries have a memory effect. If they are partially discharged and then recharged,
subsequent charges will be limited to this reduced capacity.This is a‘memory effect’. NiCd and NiMH
batteries may be more prone to this memory effect, with NiCd exhibiting a higher sensivitiy to this.
Lithium batteries should only be partially discharged. Frequent full discharging should be avoided.You
should either charge more often or use a battery with higher capacity. The charge<>discharge cycling
will help to optimize the capacity of the battery pack.

WARNING AND SAFETY NOTES
Program flow chart
Program Select
Lithium Battery
LiXX
Fast Charge
LiXX
Storage
NiMH
Cycle
NiMH
Discharge
NiCd
Discharge
NiCd
Cycle
Input Power
Low Cutoff
Key Beep
Buzzer
Capacity
Cutoff
Safety Timer
LiXX V. Type
NiCd D. Peak
Sensitivity
Temp Cutoff
USB Enable
Chg>Dchg
Waste Time
NiCd D. Peak
Sensitivity
LiPo/Lilo/LiFe
Chk Time
User Set
Program
Pb
Discharge
NiMH Charge
‘Aut/Man’
NiCd Charge
‘Aut/Man’
Pb Charge
Save Data
Load Data
Program Select
NiMH Battery
Program Select
NiCd Battery
Program Select
Pb Battery
Program Select
Save Data
Program Select
Load Data
LiXX
Discharge
LiXX Charge LiXX Balance
Start
Enter
Start
Enter
Start
Enter
Start
Enter
Start
Enter
Start
Enter
Start
Enter
+
-
+
-
+-
+-
+-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
Bat. Type
Stop
Bat. Type
Stop
Bat. Type
Stop
Bat. Type
Stop
Bat. Type
Stop
Bat. Type
Stop
12

WARNING AND SAFETY NOTES
13
This charger uses default settings for typical use when it is first connected to a 12V power supply.
The screen displays the information on the following pages in sequence and the user can change
the parameter on each screen.
If you need to alter the parameter value in the program, press the ‘Start/Enter’ key to make it
blink then change the value with the ‘+’ or ‘-’ keys. The value will be stored by pressing the
‘Start/Enter’ key once.

L iF e
V.T ype 3.3 V
L iF e
V.T ype 3.3 V
LiFe
V . T y p e 3 . 3 V
LiPo/Lilo/LiFe
CHK Time 10min
NiMH Sensitivity
D. Peak Default
-
-
-
-
-
+
+
-+
-+
-+
+
+
+
-- ++
WARNING AND SAFETY NOTES
14
N iC d S e ns itivity
D .P e a k D efa ult
The screen shows nominal voltage of the lithium battery. There are three types of
lithium batteries: LiFe (3.3V), Li-ion (3.6V), and LiPo (3.7V). It is critically important
that you set up the charger to work with the type of battery that you have. Failure
to do so could lead to damage of your battery and possibly even a fire or explosion
during the charge process.
This charger automatically detects the cell count of a lithium battery at the
beginning of a charge or discharge process. A battery that has been overly
discharged may not be properly detected.You may need to set the time term limit
to verify the cell count by the processor. Normally, 15 seconds are sufficient to
detect the cell count correctly.You may need to extend the time term limit for
batteries of large capacity. If the cell count is wrong or you set too long of a time
limit the charge or discharge process may come to an end within the time limit.This
may cause a fatal error.You have to extend the time term if the processor detects
the cell count incorrectly at the beginning of the charge or discharge process.
Otherwise, use the default value.
This shows the trigger voltage for automatic charge termination of NiCd and NiMH
batteries.The valid value range is from 5 to 20mV per cell. Setting the trigger
voltage higher may lead to overcharging, whereas setting it lower may cause
premature process termination. Please refer to the technical specifications for your
battery. Default value for NiCd is 12mV and NiMH is 7mV.
NiCd Sensitivity
D. Peak Default
USB/Temp Select
Temp Cutoff 80C
USB/Temp Select
USB Enabled

WARNING AND SAFETY NOTES
+
INC
-
+
-
+
-
+
-
+
-
-
-
-
-
-
-
+
+
+
+
+
LiFe
V.Type 3.3V
LiFe
V.Type 3.3V
LiFe
V.Type 3.3V
Waste time
CHG/DCHG 5min
Capacity Cutoff
O N 5000mAh
Safety timer
O N 1 2 0 m i n
-+
LiFe
V.Type 3.3V
K e y B e e p O N
B u z z e r O N
V.Type 3.3V
-+
15
There is a 3-pin port on the left side of the charger used as a USB interface or temperature sensor port. When
configured to display temperature, you can display the surface temperature of your battery using the optional
temperature probe . You can set the maximum allowable temperature of the battery while charging. The
process will be terminated automatically to protect the battery once it reaches this temperature. This feature
requires the temperature probe (optional). If the port is configured as a USB port, you can connect and monitor
the charger with your PC using the optional USB cable and software.
The battery will heat up after cycles of charge and discharge. The program will
insert a time delay after each charge/discharge process to allow the battery
sufficient time to cool down before starting the next cycle. The valid value
ranges are from 0 to 60 minutes.
When charging begins, the integrated safety timer starts. If an error is detected
or the termination circuit cannot detect whether the battery is fully charged or
not, the safety timer will help to prevent overcharging. Please see the following
page to calculate the appropriate safety timer duration.
The capacity cutoff feature protects against overcharging the battery when
delta-peak voltage cannot be detected or the safety timer times out. When the
battery reaches the maximum capacity that you have set, charging will be
automatically terminated.
The charger beeps each time you press a button to provide feedback of your
action. The charger also beeps or plays melody sounds during operation to
confirm different mode changes. These functions can be turned on or off.
This function monitors the voltage of the input battery used to power the
charger. If the voltage is lower than the value you set, the program will be
automatically terminated to protect the input battery.
Input power low
C u t o f f 1 0 . 0 V

Safety Timer Calculation
Safety Timer Calculation
Lithium (Lilo/LiPo/LiFe) Program
16
When charging NiCd or NiMH batteries, divide the capacity by current, then divide the result by 11.9. Use this
as the number of minutes for the safety timer setting. If the charger stops at this time threshold about 140% of
the capacity will have been fed in to the battery.
For example:
Capacity Current Safety Time
2000mAh 2.0A (2000/2.0=1000)/11.9=84 minutes
3300mAh 3.0A (3300/3.0=1100)/11.9=92 minutes
1000mAh 1.2A (1000/1.2=833)/11.9=70 minutes
This program is only suitable for charging/discharging lithium-polymer batteries with a nominal
voltage of 3.3/3.6/3.7V/cell. Different batteries have different charge techniques. There are two
methods of charging, constant voltage and constant current. The charge current varies according
to battery capacity and specification. The final voltage is very important; it should precisely match
the voltage of the battery: LiPo is 4.2V, Lilo is 4.1V, and LiFe is 3.6V. The current and voltage of the
battery should be correctly set.
When you want to change the values of parameters, press the ‘START/ENTER’ key to make it blink
and then use the ‘+’ or ‘-’ keys to change the value. Then press the ‘START/ENTER’ key again to
store the value.

Ni
D.
NiMH S ensitivity
D. Pe ak D efau lt
L iPo BALANCE
2.0A 11.1V(3S)
R : 3 S E R S : 3 S E R
CONFIRM(ENTER)
-
-+
+
Start
Enter
Batt type
Stop ‘>3 seconds’
Start
Enter
NiMH S ensitivity
D. Pe ak D efau lt
Charged
capacity
Number
of
cells
Charging
time
Charging
current
Battery
voltage
Charging a lithium battery
Charging a lithium battery
Charging a lithium battery in balance mode
17
The left side of the first line shows the type of battery you have
selected. The value on the left side of the second line is the current
you have selected. After setting the current and voltage, press the
‘START/ENTER’ key for more than three seconds to start the process
(charge current: 0.1-5.0A, voltage: 3.7-22.2V)
This function allows voltage balancing of the cells of lithium-polymer batteries while charging. In
the balance mode, the battery balance leads must be connected to the appropriate balance port
at the right side of the charger. The battery power leads must also be connected to the output
leads of the charger.
This charge mode utilizes the built-in processor to monitor the voltage of individual cells and
control input current fed into each cell to normalize the voltage.
This screen shows the real-time status while charging. Press the
‘BATT TYPE/STOP’ key once to stop charging.
This screen shows the number of cells in the battery. “R” depicts the
number of cell detected by the charger and “S” depicts the number
of cells selected by you on the previous screen. If both numbers are
identical, you can start charging by pressing the ‘START/ENTER’ key.
If not, press the ‘BATT TYPE/STOP’ key to go back to the previous
screen. Carefully check the number of cells of the battery pack
before proceeding.
L i 3 s 1 . 2 A 1 2 . 5 9 V
B A L 0 2 2 : 4 3 0 0 6 8 2

Charging a lithium battery
+
+
L iP o 6S
-
+
-
+
-
+
-
+
L iP o 5S
+
3 S
-
+
I ndiv idua l
ba l. p ort
I ndiv idua l
ba l. p ort
L iP o 4S
-
1 c e l l
2 c e l l
3 c e l l
4 c e l l
5 c e l l
6 c e l l
1 c e l l
2 c e l l
3 c e l l
4 c e l l
5 c e l l
6 c e l l
+ +
2 S
L iP o 3S
+
-
- -
L iP o 2S
-
+
1 S
Top V ie w
Top V ie w
+
-
L iP o 1S
-
-
Individual Cell Connection Diagram (pin assignment of 8-pin)
18

Fast charging and storage preparation of a lithium battery
Fast charging a lithium battery
Number
of
cells
L i P o F A S T CHG
2.0A 11.1V(3S)
L i 3 S 2.0A 12.59V
FAS 022:43 00682
-
Batt type
Stop
Elapsed
time
+
Charge
current
Supplied
capacity
Start
Enter
-
‘>3 seconds’
+
Current
voltage
battery
Storage preparation of a lithium battery
19
As the charger reaches the end of the charging cycle, the charging
current will drop. A specific CV process will be reduced to end the
charging process earlier. In fact, the charging current will drop to
1/5 when the charging process comes to 1/10. Charging capacity
will be less than normal charging, but charging time will be
shortened accordingly.
You can set up the charging current and voltage of the battery
pack. Press the ‘START/ENTER’ key to display voltage confirmation.
Then press the ‘START/ENTER’ key again to confirm and begin
charging.
This function is for charging/discharging lithium batteries which will not be used immediately. This
program is designed for charging or discharging batteries to a state suitable for extended storage.
The following voltages are recommended for extended storage: 3.75V Lilo, 3.85V LiPo, and 3.3V
LiFe. The program will begin to discharge if the original state of the battery exceeds the storage
voltage level or charge if below this voltage level.
This screen shows the real-time status of fast charging. Press the
‘BATT TYPE/STOP’ key once to stop charging.